Evercookie - the most resistant cookies

Samy Mamkar has developed a system that allows you to store cookies in 8 places, automatically restoring each other, and even ensure that cookies set in one browser act in another.

Delete this cookie is almost impossible! (Everything is possible, of course, but too much hassle)

Cookies are stored in:

• HTTP Cookies;
• Local Shared Objects (Flash);
• Preservation of cookies in the RGB values ​​of auto-generated and forcibly cached PNGs using HTML5 canvas;
• Saving cookies in Web History;
• HTML5 Session Storage;
• HTML5 Local Storage;
• HTML5 Global Storage;
• HTML5 Database Storage via SQLite.

When removed from one of these places, the cookie is automatically restored from the remaining ones. It works even if the user changes the browser (via Local Shared Objects from Flash).
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Description (in English) and demo: http://samy.pl/evercookie/ .
Try to delete cookies, clean the system and go back.



How to use?

Download .js

 <script type = "text / javascript" src = "evercookie.js"> </ script>
 <script>
   var ec = new evercookie ();
   ec.set ("id", "12345");  // install
   ec.get ("id", function (value) {alert ("Cookie value" + value)});  // read
 </ script>

Welcome to the end of anonymity.

UPDATE
Supplement from the comments (the information is not verified and I cannot find confirmation yet ):
squint :

The author of the note forgot to say that cookies are cross-domain, and you cannot keep confidential information in them

This is what is written at the beginning of the evercookie.js file.
* !!! SOME OF THESE ARE CROSS-DOMAIN COOKIES, THIS MEANS
* OTHER SITES WILL BE ABLE TO READ SOME OF THESE COOKIES !!!